diff options
| -rwxr-xr-x | bin/spack | 4 | ||||
| -rw-r--r-- | lib/spack/spack/util/debug.py | 52 |
2 files changed, 56 insertions, 0 deletions
@@ -93,6 +93,10 @@ def main(): tty.set_debug(args.debug) spack.debug = args.debug + if spack.debug: + import spack.util.debug as debug + debug.register_interrupt_handler() + spack.spack_working_dir = working_dir if args.mock: from spack.packages import PackageDB diff --git a/lib/spack/spack/util/debug.py b/lib/spack/spack/util/debug.py new file mode 100644 index 0000000000..37985eccdd --- /dev/null +++ b/lib/spack/spack/util/debug.py @@ -0,0 +1,52 @@ +############################################################################## +# Copyright (c) 2013-2015, Lawrence Livermore National Security, LLC. +# Produced at the Lawrence Livermore National Laboratory. +# +# This file is part of Spack. +# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved. +# LLNL-CODE-647188 +# +# For details, see https://scalability-llnl.github.io/spack +# Please also see the LICENSE file for our notice and the LGPL. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License (as published by +# the Free Software Foundation) version 2.1 dated February 1999. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and +# conditions of the GNU General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +############################################################################## +"""Debug signal handler: prints a stack trace and enters interpreter. + +``register_interrupt_handler()`` enables a ctrl-C handler that prints +a stack trace and drops the user into an interpreter. + +""" +import os +import code +import traceback +import signal + +def debug_handler(sig, frame): + """Interrupt running process, and provide a python prompt for + interactive debugging.""" + d = {'_frame':frame} # Allow access to frame object. + d.update(frame.f_globals) # Unless shadowed by global + d.update(frame.f_locals) + + i = code.InteractiveConsole(d) + message = "Signal received : entering python shell.\nTraceback:\n" + message += ''.join(traceback.format_stack(frame)) + i.interact(message) + os._exit(1) # Use os._exit to avoid test harness. + + +def register_interrupt_handler(): + """Register a handler to print a stack trace and enter an interpreter on Ctrl-C""" + signal.signal(signal.SIGINT, debug_handler) |